it was benedict's second-to-last public appearance as pope. he will make his final address on wednesday before stepping down from the papacy thursday evening. the first pope to do so in 600 years. but even in his final days as pope, benedict cannot escape the controversies that have consumed much of his tenure. this morning cardinal keith o'brien, the head of the church in scotland, has announced he will be stepping down amid accusations of inappropriate and intimate behavior with current and former priests. chris matthews, a little bit of reaction from you. >> it's bad. >> it keeps going, huh? >> i grew up in the catholic church. >> me, too. >> we didn't see any of this. we thought priests had given up on sex as part of the holy orders and gave up on money and sacrificed their lives. those were the priests we knew, we thought. now we see nothing but headlines of people who had no intention of doing that. they couldn't have. >> cover-up. >> and the cover-up and the attempt to make the church look good, and it has made it look terrible. >> chri